Solution Review: Delete an Element at a Specific Index

#include <iostream>
using namespace std;
// printArray function
void printArray(int * arr, int size) {
  for (int i = 0; i < size; i++) {
    cout << arr[i] << " ";
  }
  cout << endl;
}
// delete_element function
void delete_element(int *&arr, int size, int index) {
  // Declare new array dynamically
  int * new_arr = new int[size - 1];
  // Traverse array
  for (int i = 0; i < size - 1; i++) {
    // 
    if (i >= index) {
      new_arr[i] = arr[i + 1];
    } 
    else {
      // Copy elements in new array
      new_arr[i] = arr[i];
    }
  }
  // Free memory pointed out by arr
  delete[] arr;
  // Pointer arr will point to new_arr
  arr = new_arr;
  //return arr;
}
// main function
int main() {
  // Initialize variables
  int size = 5;
  int index = 3;
  // Initialize dynamic array
  int * arr = new int[size];
  // Fill elements in an array
  for (int i = 0; i < size; i++) {
    arr[i] = i;
  }
  // Call printArray function
  printArray(arr, size);
  // Call delete_element function
  delete_element(arr, size, index);
  // Call printArray function
  printArray(arr, size - 1);
  return 0;
}